Hydrogen adsorption in ordered mesoporous carbon synthesized by a soft-template approach

Dipendu Saha, Zuojun Wei, Sri H. Valluri, Shuguang Deng

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

An ordered mesoporous carbon was synthesized with soft-template approach as a potential adsorbent for hydrogen storage through physical adsorption. The carbon adsorbent prepared in this work has a Brunauer-Emmett-Teller (BET) specific surface area of 798 m2/g, uniform pore size distribution with an average pore diameter of 6.26 nm, and pore volume of 0.87 cm 3/g. Hydrogen adsorption equilibrium and kinetics in the carbon adsorbent were measured in a volumetric adsorption apparatus at 77,194.5, and 298 K. A hydrogen adsorption capacity of 1.27 wt % was observed at 1.05 bar and 77 K, hydrogen diffusivity in the carbon is estimated to be 1 × 10 -6 cm2/s at 194.5 K, and activation energy for hydrogen diffusion in the carbon is 0.236 kJ/mol. The isosteric heat of adsorption for hydrogen in the carbon adsorbent is between 3 and 6 kJ/mol, which is in the same range of the heat of adsorption of hydrogen measured on other carbonaceous materials.

Original languageEnglish (US)
Pages (from-to)39-50
Number of pages12
JournalJournal of Porous Media
Volume13
Issue number1
DOIs
StatePublished - 2010
Externally publishedYes

Fingerprint

Adsorption
Hydrogen
Template
Carbon
templates
Adsorbents
adsorption
adsorbents
carbon
hydrogen
porosity
Heat
Hydrogen Storage
carbonaceous materials
Activation Energy
Hydrogen storage
heat
Diffusivity
Surface area
Specific surface area

Keywords

  • Equilibrium
  • H adsorption
  • Isosteric heat of adsorption
  • Kinetics
  • Ordered mesoporous carbon
  • Soft template

ASJC Scopus subject areas

  • Biomedical Engineering
  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)
  • Modeling and Simulation
  • Condensed Matter Physics

Cite this

Hydrogen adsorption in ordered mesoporous carbon synthesized by a soft-template approach. / Saha, Dipendu; Wei, Zuojun; Valluri, Sri H.; Deng, Shuguang.

In: Journal of Porous Media, Vol. 13, No. 1, 2010, p. 39-50.

Research output: Contribution to journalArticle

Saha, Dipendu ; Wei, Zuojun ; Valluri, Sri H. ; Deng, Shuguang. / Hydrogen adsorption in ordered mesoporous carbon synthesized by a soft-template approach. In: Journal of Porous Media. 2010 ; Vol. 13, No. 1. pp. 39-50.
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